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#!/usr/bin/env ruby

require File.dirname(__FILE__) + '/../../spec_helper'

require 'puppet/type/file'
require 'puppet/util/backups'
include PuppetTest

describe Puppet::Util::Backups do
    before do
        FileTest.stubs(:exists?).returns true
    end

    describe "when backing up a file" do
        it "should noop if the file does not exist" do
            FileTest.expects(:exists?).returns false
            file = Puppet::Type::File.new(:name => '/no/such/file')
            file.expects(:bucket).never

            file.perform_backup
        end

        it "should succeed silently if self[:backup] is false" do
            file = Puppet::Type::File.new(:name => '/no/such/file', :backup => false)
            file.expects(:bucket).never
            FileTest.expects(:exists?).never
            file.perform_backup
        end

        it "a bucket should be used when provided" do
            path = '/my/file'

            File.stubs(:stat).with(path).returns(mock('stat', :ftype => 'file'))

            file = Puppet::Type::File.new(:name => path, :backup => 'foo')
            bucket = stub('bucket', 'name' => 'foo')
            file.stubs(:bucket).returns bucket

            bucket.expects(:backup).with(path).returns("mysum")

            file.perform_backup
        end

        it "should propagate any exceptions encountered when backing up to a filebucket" do
            path = '/my/file'

            File.stubs(:stat).with(path).returns(mock('stat', :ftype => 'file'))

            file = Puppet::Type::File.new(:name => path, :backup => 'foo')
            bucket = stub('bucket', 'name' => 'foo')
            file.stubs(:bucket).returns bucket

            bucket.expects(:backup).raises ArgumentError

            lambda { file.perform_backup }.should raise_error(ArgumentError)
        end

        describe "and no filebucket is configured" do
            it "should remove any local backup if one exists" do
                path = '/my/file'
                FileTest.stubs(:exists?).returns true

                backup = path + ".foo"

                File.expects(:lstat).with(backup).returns stub("stat", :ftype => "file")
                File.expects(:unlink).with(backup)

                FileUtils.stubs(:cp_r)

                file = Puppet::Type::File.new(:name => path, :backup => '.foo')
                file.perform_backup
            end

            it "should fail when the old backup can't be removed" do
                path = '/my/file'
                FileTest.stubs(:exists?).returns true

                backup = path + ".foo"

                File.expects(:lstat).with(backup).returns stub("stat", :ftype => "file")
                File.expects(:unlink).raises ArgumentError

                FileUtils.expects(:cp_r).never

                file = Puppet::Type::File.new(:name => path, :backup => '.foo')
                lambda { file.perform_backup }.should raise_error(Puppet::Error)
            end

            it "should not try to remove backups that don't exist" do
                path = '/my/file'
                FileTest.stubs(:exists?).returns true

                backup = path + ".foo"

                File.expects(:lstat).with(backup).raises(Errno::ENOENT)
                File.expects(:unlink).never

                FileUtils.stubs(:cp_r)

                file = Puppet::Type::File.new(:name => path, :backup => '.foo')
                file.perform_backup
            end

            it "a copy should be created in the local directory" do
                path = '/my/file'
                FileTest.stubs(:exists?).with(path).returns true

                FileUtils.expects(:cp_r).with(path, path + ".foo", :preserve => true)

                file = Puppet::Type::File.new(:name => path, :backup => '.foo')
                file.perform_backup.should be_true
            end

            it "should propagate exceptions if no backup can be created" do
                path = '/my/file'
                FileTest.stubs(:exists?).with(path).returns true

                FileUtils.expects(:cp_r).raises ArgumentError

                file = Puppet::Type::File.new(:name => path, :backup => '.foo')
                lambda { file.perform_backup }.should raise_error(Puppet::Error)
            end
        end
    end

    describe "when backing up a directory" do
        it "a bucket should work when provided" do
            path = '/my/dir'

            File.stubs(:file?).returns true
            Find.expects(:find).with(path).yields("/my/dir/file")

            bucket = stub('bucket', :name => "eh")
            bucket.expects(:backup).with("/my/dir/file").returns true

            file = Puppet::Type::File.new(:name => path, :backup => 'foo')
            file.stubs(:bucket).returns bucket

            File.stubs(:stat).with(path).returns(stub('stat', :ftype => 'directory'))

            file.perform_backup
        end

        it "should do nothing when recursing" do
            path = '/my/dir'

            bucket = stub('bucket', :name => "eh")
            bucket.expects(:backup).never

            file = Puppet::Type::File.new(:name => path, :backup => 'foo', :recurse => true)
            file.stubs(:bucket).returns bucket

            File.stubs(:stat).with(path).returns(stub('stat', :ftype => 'directory'))

            Find.expects(:find).never

            file.perform_backup
        end
    end
end